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http://dx.doi.org/10.5010/JPB.2005.32.4.301

Shoot Proliferation and Plant Regeneration from Suspension-Cultured Cells of Dianthus gratianopol  

Kim Joon-Chul (Division of Life Science, Kangwon National University)
Publication Information
Journal of Plant Biotechnology / v.32, no.4, 2005 , pp. 301-306 More about this Journal
Abstract
Conditions for efficient organogenesis and plant regeneration from Dianthus gratianopol suspension cultured cells were established. Shoot-forming calli of glossy surface, pale green and knobby type were selected from leaf explant-derived calli and were suspension-subcultured every week in CP liquid medium with 1.0 mg/L 2,4-D and 0.5 mg/L BAP. Combinations of 1.0 mg/L 2,4-D and 0.5 mg/L BAP, and 1.5 mg/L 2,4-D and 0.5 mg/L BAP were effective for the induction of regenerative callus from the suspension cultured cell clusters. Multiple shoot primordia were initiated from the green spots of these regenerative callus and formed shoots on MS medium with 1.0 mg/L TDZ and 0.5 mg/L PAA. Shoot regeneration frequency (calli regenerating at least one shoot) was about 87%. For plant regeneration, proliferated shoots were excised and transferred to MS medium with 0.1 mg/L NAA for root initiation after 9 weeks of culture. The regenerants were potted in soil and formed the flowering buds and petals. Also, adventitious shoots were formed from the excised green shoot primordia of regenerative callus and these shoots proliferated successfully and regenerated to whole plants.
Keywords
Organogenesis; Dianthus gratianopol; Shoot-forming calli; glossy surface; adventitious shoots; flowering buds;
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